
21/04/2024
Yellowstone National Park is one of the most iconic in America—and also the world's first national park (established in 1872 by President Ulysses S. Grant). It has the largest number of mammal species, its own Grand Canyon, and half the world's hydrothermal features, including mud pots, geysers, and hot springs. The latter are so acidic, they can actually dissolve a human body overnight.